# uncompyle6 version 3.2.3
# Python bytecode 3.6 (3379)
# Decompiled from: Python 3.6.8 |Anaconda custom (64-bit)| (default, Feb 21 2019, 18:30:04) [MSC v.1916 64 bit (AMD64)]
# Embedded file name: ctypes\__init__.py
"""create and manipulate C data types in Python"""
import os as _os, sys as _sys

__version__ = "1.1.0"
from _ctypes import Union, Structure, Array
from _ctypes import _Pointer
from _ctypes import CFuncPtr as _CFuncPtr
from _ctypes import __version__ as _ctypes_version
from _ctypes import RTLD_LOCAL, RTLD_GLOBAL
from _ctypes import ArgumentError
from struct import calcsize as _calcsize

if __version__ != _ctypes_version:
    raise Exception("Version number mismatch", __version__, _ctypes_version)
if _os.name == "nt":
    from _ctypes import FormatError
DEFAULT_MODE = RTLD_LOCAL
if _os.name == "posix":
    if _sys.platform == "darwin":
        if int(_os.uname().release.split(".")[0]) < 8:
            DEFAULT_MODE = RTLD_GLOBAL
from _ctypes import (
    FUNCFLAG_CDECL as _FUNCFLAG_CDECL,
    FUNCFLAG_PYTHONAPI as _FUNCFLAG_PYTHONAPI,
    FUNCFLAG_USE_ERRNO as _FUNCFLAG_USE_ERRNO,
    FUNCFLAG_USE_LASTERROR as _FUNCFLAG_USE_LASTERROR,
)


def create_string_buffer(init, size=None):
    """create_string_buffer(aBytes) -> character array
    create_string_buffer(anInteger) -> character array
    create_string_buffer(aBytes, anInteger) -> character array
    """
    if isinstance(init, bytes):
        if size is None:
            size = len(init) + 1
        buftype = c_char * size
        buf = buftype()
        buf.value = init
        return buf
    if isinstance(init, int):
        buftype = c_char * init
        buf = buftype()
        return buf
    raise TypeError(init)


def c_buffer(init, size=None):
    return create_string_buffer(init, size)


_c_functype_cache = {}


def CFUNCTYPE(restype, *argtypes, **kw):
    """CFUNCTYPE(restype, *argtypes,
                 use_errno=False, use_last_error=False) -> function prototype.
    
    restype: the result type
    argtypes: a sequence specifying the argument types
    
    The function prototype can be called in different ways to create a
    callable object:
    
    prototype(integer address) -> foreign function
    prototype(callable) -> create and return a C callable function from callable
    prototype(integer index, method name[, paramflags]) -> foreign function calling a COM method
    prototype((ordinal number, dll object)[, paramflags]) -> foreign function exported by ordinal
    prototype((function name, dll object)[, paramflags]) -> foreign function exported by name
    """
    flags = _FUNCFLAG_CDECL
    if kw.pop("use_errno", False):
        flags |= _FUNCFLAG_USE_ERRNO
    if kw.pop("use_last_error", False):
        flags |= _FUNCFLAG_USE_LASTERROR
    if kw:
        raise ValueError("unexpected keyword argument(s) %s" % kw.keys())
    try:
        return _c_functype_cache[(restype, argtypes, flags)]
    except KeyError:

        class CFunctionType(_CFuncPtr):
            _argtypes_ = argtypes
            _restype_ = restype
            _flags_ = flags

        _c_functype_cache[(restype, argtypes, flags)] = CFunctionType
        return CFunctionType


if _os.name == "nt":
    from _ctypes import LoadLibrary as _dlopen
    from _ctypes import FUNCFLAG_STDCALL as _FUNCFLAG_STDCALL

    _win_functype_cache = {}

    def WINFUNCTYPE(restype, *argtypes, **kw):
        flags = _FUNCFLAG_STDCALL
        if kw.pop("use_errno", False):
            flags |= _FUNCFLAG_USE_ERRNO
        if kw.pop("use_last_error", False):
            flags |= _FUNCFLAG_USE_LASTERROR
        if kw:
            raise ValueError("unexpected keyword argument(s) %s" % kw.keys())
        try:
            return _win_functype_cache[(restype, argtypes, flags)]
        except KeyError:

            class WinFunctionType(_CFuncPtr):
                _argtypes_ = argtypes
                _restype_ = restype
                _flags_ = flags

            _win_functype_cache[(restype, argtypes, flags)] = WinFunctionType
            return WinFunctionType

    if WINFUNCTYPE.__doc__:
        WINFUNCTYPE.__doc__ = CFUNCTYPE.__doc__.replace("CFUNCTYPE", "WINFUNCTYPE")
    else:
        if _os.name == "posix":
            from _ctypes import dlopen as _dlopen
    from _ctypes import sizeof, byref, addressof, alignment, resize
    from _ctypes import get_errno, set_errno
    from _ctypes import _SimpleCData

    def _check_size(typ, typecode=None):
        from struct import calcsize

        if typecode is None:
            typecode = typ._type_
        actual, required = sizeof(typ), calcsize(typecode)
        if actual != required:
            raise SystemError(
                "sizeof(%s) wrong: %d instead of %d" % (typ, actual, required)
            )

    class py_object(_SimpleCData):
        _type_ = "O"

        def __repr__(self):
            try:
                return super().__repr__()
            except ValueError:
                return "%s(<NULL>)" % type(self).__name__

    _check_size(py_object, "P")

    class c_short(_SimpleCData):
        _type_ = "h"

    _check_size(c_short)

    class c_ushort(_SimpleCData):
        _type_ = "H"

    _check_size(c_ushort)

    class c_long(_SimpleCData):
        _type_ = "l"

    _check_size(c_long)

    class c_ulong(_SimpleCData):
        _type_ = "L"

    _check_size(c_ulong)
    if _calcsize("i") == _calcsize("l"):
        c_int = c_long
        c_uint = c_ulong
    else:

        class c_int(_SimpleCData):
            _type_ = "i"

        _check_size(c_int)

        class c_uint(_SimpleCData):
            _type_ = "I"

        _check_size(c_uint)

    class c_float(_SimpleCData):
        _type_ = "f"

    _check_size(c_float)

    class c_double(_SimpleCData):
        _type_ = "d"

    _check_size(c_double)

    class c_longdouble(_SimpleCData):
        _type_ = "g"

    if sizeof(c_longdouble) == sizeof(c_double):
        c_longdouble = c_double
    if _calcsize("l") == _calcsize("q"):
        c_longlong = c_long
        c_ulonglong = c_ulong
    else:

        class c_longlong(_SimpleCData):
            _type_ = "q"

        _check_size(c_longlong)

        class c_ulonglong(_SimpleCData):
            _type_ = "Q"

        _check_size(c_ulonglong)

    class c_ubyte(_SimpleCData):
        _type_ = "B"

    c_ubyte.__ctype_le__ = c_ubyte.__ctype_be__ = c_ubyte
    _check_size(c_ubyte)

    class c_byte(_SimpleCData):
        _type_ = "b"

    c_byte.__ctype_le__ = c_byte.__ctype_be__ = c_byte
    _check_size(c_byte)

    class c_char(_SimpleCData):
        _type_ = "c"

    c_char.__ctype_le__ = c_char.__ctype_be__ = c_char
    _check_size(c_char)

    class c_char_p(_SimpleCData):
        _type_ = "z"

        def __repr__(self):
            return "%s(%s)" % (
                self.__class__.__name__,
                c_void_p.from_buffer(self).value,
            )

    _check_size(c_char_p, "P")

    class c_void_p(_SimpleCData):
        _type_ = "P"

    c_voidp = c_void_p
    _check_size(c_void_p)

    class c_bool(_SimpleCData):
        _type_ = "?"

    from _ctypes import POINTER, pointer, _pointer_type_cache

    class c_wchar_p(_SimpleCData):
        _type_ = "Z"

        def __repr__(self):
            return "%s(%s)" % (
                self.__class__.__name__,
                c_void_p.from_buffer(self).value,
            )

    class c_wchar(_SimpleCData):
        _type_ = "u"

    def _reset_cache():
        _pointer_type_cache.clear()
        _c_functype_cache.clear()
        if _os.name == "nt":
            _win_functype_cache.clear()
        POINTER(c_wchar).from_param = c_wchar_p.from_param
        POINTER(c_char).from_param = c_char_p.from_param
        _pointer_type_cache[None] = c_void_p
        CFUNCTYPE(c_int)(lambda: None)

    def create_unicode_buffer(init, size=None):
        """create_unicode_buffer(aString) -> character array
        create_unicode_buffer(anInteger) -> character array
        create_unicode_buffer(aString, anInteger) -> character array
        """
        if isinstance(init, str):
            if size is None:
                size = len(init) + 1
            buftype = c_wchar * size
            buf = buftype()
            buf.value = init
            return buf
        if isinstance(init, int):
            buftype = c_wchar * init
            buf = buftype()
            return buf
        raise TypeError(init)

    def SetPointerType(pointer, cls):
        if _pointer_type_cache.get(cls, None) is not None:
            raise RuntimeError("This type already exists in the cache")
        if id(pointer) not in _pointer_type_cache:
            raise RuntimeError("What's this???")
        pointer.set_type(cls)
        _pointer_type_cache[cls] = pointer
        del _pointer_type_cache[id(pointer)]

    def ARRAY(typ, len):
        return typ * len

    class CDLL(object):
        """An instance of this class represents a loaded dll/shared
        library, exporting functions using the standard C calling
        convention (named 'cdecl' on Windows).
        
        The exported functions can be accessed as attributes, or by
        indexing with the function name.  Examples:
        
        <obj>.qsort -> callable object
        <obj>['qsort'] -> callable object
        
        Calling the functions releases the Python GIL during the call and
        reacquires it afterwards.
        """

        _func_flags_ = _FUNCFLAG_CDECL
        _func_restype_ = c_int
        _name = "<uninitialized>"
        _handle = 0
        _FuncPtr = None

        def __init__(
            self,
            name,
            mode=DEFAULT_MODE,
            handle=None,
            use_errno=False,
            use_last_error=False,
        ):
            self._name = name
            flags = self._func_flags_
            if use_errno:
                flags |= _FUNCFLAG_USE_ERRNO
            if use_last_error:
                flags |= _FUNCFLAG_USE_LASTERROR

            class _FuncPtr(_CFuncPtr):
                _flags_ = flags
                _restype_ = self._func_restype_

            self._FuncPtr = _FuncPtr
            if handle is None:
                self._handle = _dlopen(self._name, mode)
            else:
                self._handle = handle

        def __repr__(self):
            return "<%s '%s', handle %x at %#x>" % (
                self.__class__.__name__,
                self._name,
                self._handle & _sys.maxsize * 2 + 1,
                id(self) & _sys.maxsize * 2 + 1,
            )

        def __getattr__(self, name):
            if name.startswith("__"):
                if name.endswith("__"):
                    raise AttributeError(name)
            func = self.__getitem__(name)
            setattr(self, name, func)
            return func

        def __getitem__(self, name_or_ordinal):
            func = self._FuncPtr((name_or_ordinal, self))
            if not isinstance(name_or_ordinal, int):
                func.__name__ = name_or_ordinal
            return func

    class PyDLL(CDLL):
        """This class represents the Python library itself.  It allows
        accessing Python API functions.  The GIL is not released, and
        Python exceptions are handled correctly.
        """

        _func_flags_ = _FUNCFLAG_CDECL | _FUNCFLAG_PYTHONAPI

    if _os.name == "nt":

        class WinDLL(CDLL):
            """This class represents a dll exporting functions using the
            Windows stdcall calling convention.
            """

            _func_flags_ = _FUNCFLAG_STDCALL

        from _ctypes import _check_HRESULT, _SimpleCData

        class HRESULT(_SimpleCData):
            _type_ = "l"
            _check_retval_ = _check_HRESULT

        class OleDLL(CDLL):
            """This class represents a dll exporting functions using the
            Windows stdcall calling convention, and returning HRESULT.
            HRESULT error values are automatically raised as OSError
            exceptions.
            """

            _func_flags_ = _FUNCFLAG_STDCALL
            _func_restype_ = HRESULT

    class LibraryLoader(object):
        def __init__(self, dlltype):
            self._dlltype = dlltype

        def __getattr__(self, name):
            if name[0] == "_":
                raise AttributeError(name)
            dll = self._dlltype(name)
            setattr(self, name, dll)
            return dll

        def __getitem__(self, name):
            return getattr(self, name)

        def LoadLibrary(self, name):
            return self._dlltype(name)

    cdll = LibraryLoader(CDLL)
    pydll = LibraryLoader(PyDLL)
if _os.name == "nt":
    pythonapi = PyDLL("python dll", None, _sys.dllhandle)
else:
    if _sys.platform == "cygwin":
        pythonapi = PyDLL("libpython%d.%d.dll" % _sys.version_info[:2])
    else:
        pythonapi = PyDLL(None)
    if _os.name == "nt":
        windll = LibraryLoader(WinDLL)
        oledll = LibraryLoader(OleDLL)
        if _os.name == "nt":
            GetLastError = windll.kernel32.GetLastError
        else:
            GetLastError = windll.coredll.GetLastError
        from _ctypes import get_last_error, set_last_error

        def WinError(code=None, descr=None):
            if code is None:
                code = GetLastError()
            if descr is None:
                descr = FormatError(code).strip()
            return OSError(None, descr, None, code)

    if sizeof(c_uint) == sizeof(c_void_p):
        c_size_t = c_uint
        c_ssize_t = c_int
    else:
        if sizeof(c_ulong) == sizeof(c_void_p):
            c_size_t = c_ulong
            c_ssize_t = c_long
        else:
            if sizeof(c_ulonglong) == sizeof(c_void_p):
                c_size_t = c_ulonglong
                c_ssize_t = c_longlong
        from _ctypes import _memmove_addr, _memset_addr, _string_at_addr, _cast_addr

        memmove = CFUNCTYPE(c_void_p, c_void_p, c_void_p, c_size_t)(_memmove_addr)
        memset = CFUNCTYPE(c_void_p, c_void_p, c_int, c_size_t)(_memset_addr)

        def PYFUNCTYPE(restype, *argtypes):
            class CFunctionType(_CFuncPtr):
                _argtypes_ = argtypes
                _restype_ = restype
                _flags_ = _FUNCFLAG_CDECL | _FUNCFLAG_PYTHONAPI

            return CFunctionType

        _cast = PYFUNCTYPE(py_object, c_void_p, py_object, py_object)(_cast_addr)

        def cast(obj, typ):
            return _cast(obj, obj, typ)

        _string_at = PYFUNCTYPE(py_object, c_void_p, c_int)(_string_at_addr)

        def string_at(ptr, size=-1):
            """string_at(addr[, size]) -> string
            
            Return the string at addr."""
            return _string_at(ptr, size)

        try:
            from _ctypes import _wstring_at_addr
        except ImportError:
            pass
        else:
            _wstring_at = PYFUNCTYPE(py_object, c_void_p, c_int)(_wstring_at_addr)

            def wstring_at(ptr, size=-1):
                """wstring_at(addr[, size]) -> string
                
                Return the string at addr."""
                return _wstring_at(ptr, size)

        if _os.name == "nt":

            def DllGetClassObject(rclsid, riid, ppv):
                try:
                    ccom = __import__(
                        "comtypes.server.inprocserver", globals(), locals(), ["*"]
                    )
                except ImportError:
                    return -2147221231

                return ccom.DllGetClassObject(rclsid, riid, ppv)

            def DllCanUnloadNow():
                try:
                    ccom = __import__(
                        "comtypes.server.inprocserver", globals(), locals(), ["*"]
                    )
                except ImportError:
                    return 0

                return ccom.DllCanUnloadNow()

        from ctypes._endian import BigEndianStructure, LittleEndianStructure

        c_int8 = c_byte
        c_uint8 = c_ubyte
        for kind in [c_short, c_int, c_long, c_longlong]:
            if sizeof(kind) == 2:
                c_int16 = kind
            else:
                if sizeof(kind) == 4:
                    c_int32 = kind
                else:
                    if sizeof(kind) == 8:
                        c_int64 = kind

        for kind in [c_ushort, c_uint, c_ulong, c_ulonglong]:
            if sizeof(kind) == 2:
                c_uint16 = kind
            else:
                if sizeof(kind) == 4:
                    c_uint32 = kind
                else:
                    if sizeof(kind) == 8:
                        c_uint64 = kind

        del kind
        _reset_cache()
